Horseshoe



UNITED STATES FFICE.

ATENT HORSESHOE.

SPECIFICATION forming part of Letters Patent No. 275,141, dated April 3, 1883. Application filed February 19, 1883. (No model.)

10 all whom it may concern:

Be it known that I, ERASTUS A. CARROLL, of East Bloomfield, county of Ontario, and State of New York, have invented a new and useful Improvement in Horseshoes, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, making part of this specification.

My invention relates to a new and useful improvement in horseshoes, and more especially to an improvement in calks adapted to be applied thereto; and it consists in a calk of pyramidal form on its outer or exposed face, and having its inner face, or that resting in and against the horseshoe, rounded, or in the form of a section of asphere, from the center of which projects a threaded shank adapted to be screwed into the shoe for the purpose of securing said calk in and upon the shoe.

It further-consists in passing a pin or nail through the shoe and shank of the calk and clinching it upon the sides for preventing the escape of said calk by unscrewing.-

In the accompanying drawings, Figure 1 represents a perspective view of 'a horseshoe with my improved calks applied thereto; and Fig. 2 is a side elevation of one of my improved calks shown set into a horseshoe, with the shoe in section.

A A represent the calks secured in the horseshoe E, and for this purpose [propose to provide the shoe, on its lower or exposed surface, with countersinks and perforations for the reception of the calks A. Said calks A are by preference pyramidal in form on their exposed sides, as shown at B in Fig. 2, their inner sides, or the sides resting in and upon the shoe E, being rounded, or resembling in form a section of a sphere, as shown at G, adapting them to fit evenly and snugly into and fill the corresponding countersink, before mentioned, in the shoe. The calks A A are each providedon their inner rounded faces with shanks D, threaded and screwing into perforations D, extending from the centers of the countersinks in the shoe through said shoe, and for the purpose of applying a wrench to said calk the latter is provided at F with vertical walls equal in number to the number of sides of the pyramidal face of the calk, thus giving it the polygonal form ofa bolt head or nut, and adapting it to be easily and firmly screwed into its countersink in the shoe E. When the calk A is screwed firmly into place its rounded surface 0 willserve as a steadyingshoulder, and prevent any play or lateral thrust of said calk, thus forming a strong and durable calk. If preferred, the point of said calk may be made conical in form from the nutface F outward.

A perforation may be made through both the shoe E and shank D, and a pin or clinchnail, a, driven, therein and clinched for securing it against displacement, thus preventing the turning and loosening of the shank D. This pin or clinch-nail may, however, be omitted, if desired.

Having now described my invention, what I claim as new is- 1. A calk for horseshoes, having the vertical polygonal portion F, forming a nut-face for the reception of a wrench, a pointed portion, B, extending from the vertical walls F out- .ward, a shoulder, (J, hemispherical or convex in form, and a threaded shank, D, all for the purpose and substantially as described.

2. The combination, with a horseshoe, of a pointed calk having a rounded shoulder adapted to fit into and fill a corresponding countersink in said shoe, a threaded shank upon said rounded shoulder, screwing into said shoe, and vertical polygonal sides for the application of a wrench, all substantially as and for the purpose described.

3. The combination, with a horseshoe, of a calk screwing into said shoe, a perforated screwshank adapted to receive a horizontal pin or clinch-nail, and a pin or clinch-nail penetrating the shoe and shank, substantially as and for the purpose described.

In testimony whereof I have hereunto set my hand this 17th day of February, A. D. 1883.

ERASTUS A. CARROLL. Witnesses:

G. W. HAMLIN, WALTER M. BRUNSON. 

